tkabber: Set the correct path to tkabber-plugins.

This should now point to the path for the tkabber plugins package, which will be
used as soon as the tkabber-plugins derivation is available as a symlink in the
user's environment.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>

pkgs/applications/networking/instant-messengers/tkabber/default.nix

@@ -35,7 +35,9 @@ in stdenv.mkDerivation rec {
   '';
 
   postInstall = ''
-    wrapProgram $out/bin/tkabber --set TCLLIBPATH '"${tclLibPaths}"'
+    wrapProgram $out/bin/tkabber \
+      --set TCLLIBPATH '"${tclLibPaths}"' \
+      --set TKABBER_SITE_PLUGINS '$HOME/.nix-profile/share/tkabber-plugins'
   '';
 
   buildInputs = [ tcl tk x11 makeWrapper ] ++ tclLibraries;